/*
 * Copyright 2023 AntGroup CO., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 */

package com.antgroup.geaflow.utils;

import java.io.Serializable;

public class TicToc implements Serializable {

    private long start = 0L;

    public void tic() {
        this.start = System.currentTimeMillis();
    }

    public long toc() {
        long end = System.currentTimeMillis();
        long duration = end - this.start;
        this.start = end;
        return duration;
    }

    public void ticNano() {
        start = System.nanoTime();
    }

    public long tocNano() {
        long end = System.nanoTime();
        long duration = end - this.start;
        if (duration < 0) {
            return -1;
        }
        this.start = end;
        return duration;
    }

}
